Display screen with a graphical user interface



FIGURE is a front view of a display screen with a graphical user interface showing our new design.

The broken line showing of the display screen is for the purpose of illustrating environmental structure and forms no part of the claimed design. The broken line showing the remainder of the graphical user interface forms no part of the claimed design. 

CLAIM The ornamental design for a display screen with a graphical user interface, as shown and described. 